Action for stringed musical instruments.



No. 703130. Patented Dec. 30, I902.

H. STEENBDCK.

ACTION FOR STFHNGED MUSICAL INSTRUMENTS.

(Applicatioiz filed Apr. 1. 1902.

(No Model.)

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UNITED STATES PATENT OFFICE.

HENRY STEENBOOK, OF NEWV YORK, N. Y.

ACTION FOR STRINGED MUSICAL INSTRUMENTS.

SPECIFICATION forming part of Letters Patent N 0. 717,130, dated December 30, 1902. Application filed April 1, 1902. Serial No. 100,916. (No model.)

of New York city, county and State of New York, have invented certain new and useful Improvements in Actions for Stringed Musical Instruments, of which the following is a specification.

This invention relates to an action for stringed musical instruments which is of simple construction and permits the hammer to fall quickly and freely away from the string.

In the accompanying drawings, Figure l is a side View of my improved action, showing the position of the parts with the key raised; and Fig. 2, a similar view with the key depressed.

The lettera represents the key of a stringed musical instrument turning on a fulcrum ct and enlarged at its end to form a downwardlyextending projection of. This projection has an inclined straight rear plane a cushioned as at b. At its front a rail 0, having an inclined cushioned face, limits the play of the tion (I has a convex front plane 01 the curve being a quadrant struck from a point 01% below and back of pivot 01.

When the key is raised, Fig. 1, the lower section of quadrant d bears against the inclined plane a When the key is depressed, Fig. 2, the quadrant will first roll along the inclined plane and will entirely clear it while the hammer strikes the string f. As the hammer falls back the quadrant will rengage the inclined plane and will roll along the same after the key is released.

It will be seen that my action is of simple construction, responds quickly to the touch, and permits an unimpeded movement of the hammer.

What I claim is- 1. An action for stringed musical instruments composed of a key having an inclined rear plane, a hammer, and a hammer-shank having a convex front plane that is adapted to engage the rear plane of the key, substantially as specified.

2. An action for stringed musical instruments composed of a key having a straight inclined rear plane, a hammer, and a hammer-shank having a convex quadrantal front plane, the quadrant being struck from a point back of the hammer-fulcrum, substantially as specified.

Signed by me at New York city, New York, this 31st day of March, 1902.

HENRY STEENBOGK.

Witnesses: 7

WILLIAM SoHULz, F. v. BRIESEN. 

